As we expected, Steve Jobs unveiled a new $1,800 MacBook today. And while much of the hype concerns the minuscule size—the three-pound laptop is just .76 inches deep at its thickest—we think the fanboys might be overlooking a fatal flaw: It boasts only five hours of battery life, which barely registers next to the roughly 12 hours you'll get from the 2.6-pound Sony Vaio TZ185N/WC (which, granted, will set you back an extra grand). Cool looking? Yes. Revolutionary? Hardly.